当前位置: X-MOL 学术Science › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Adaptive introgression underlies polymorphic seasonal camouflage in snowshoe hares
Science ( IF 56.9 ) Pub Date : 2018-06-21 , DOI: 10.1126/science.aar5273
Matthew R. Jones 1 , L. Scott Mills 2, 3, 4 , Paulo Célio Alves 2, 5, 6 , Colin M. Callahan 1 , Joel M. Alves 5, 7 , Diana J. R. Lafferty 2, 4, 8 , Francis M. Jiggins 7 , Jeffrey D. Jensen 9, 10 , José Melo-Ferreira 5, 6 , Jeffrey M. Good 1, 2
Affiliation  

Hybrid camouflage variation Snowshoe hares molt from a brown coat to a white coat in winter. In some populations, however, where winter snow is less extensive, hares molt from a brown coat to a brown coat. Jones et al. show that regulation of the pigmentation gene Agouti is responsible for the winter coat color change. Hybridization with jackrabbits has led to introgression around this gene that facilitates the brown winter morph. Hybridization appears to have provided important adaptive variation to the snowshoe hare. Science, this issue p. 1355 Exchange of genetic variants through hybridization can seed past and ongoing adaptation to rapidly changing environments. Snowshoe hares (Lepus americanus) maintain seasonal camouflage by molting to a white winter coat, but some hares remain brown during the winter in regions with low snow cover. We show that cis-regulatory variation controlling seasonal expression of the Agouti gene underlies this adaptive winter camouflage polymorphism. Genetic variation at Agouti clustered by winter coat color across multiple hare and jackrabbit species, revealing a history of recurrent interspecific gene flow. Brown winter coats in snowshoe hares likely originated from an introgressed black-tailed jackrabbit allele that has swept to high frequency in mild winter environments. These discoveries show that introgression of genetic variants that underlie key ecological traits can seed past and ongoing adaptation to rapidly changing environments.

中文翻译:

适应性基因渗入是雪鞋野兔多态性季节性伪装的基础

混合伪装变异雪鞋野兔在冬天从棕色外套蜕皮到白色外套。然而,在一些冬季降雪不那么广泛的种群中,野兔会从棕色皮毛蜕变成棕色皮毛。琼斯等人。表明色素沉着基因 Agouti 的调节是造成冬季毛色变化的原因。与长耳野兔的杂交导致围绕该基因的基因渗入,促进了棕色冬季变种。杂交似乎为雪鞋野兔提供了重要的适应性变异。科学,这个问题 p。1355 通过杂交交换遗传变异可以播种过去和持续适应快速变化的环境。雪鞋野兔 (Lepus americanus) 通过蜕皮成白色的冬季外套来保持季节性伪装,但在积雪较少的地区,一些野兔在冬季仍保持棕色。我们表明控制 Agouti 基因季节性表达的顺式调节变异是这种适应性冬季伪装多态性的基础。Agouti 的遗传变异通过多种野兔和长耳兔物种的冬季毛色聚集在一起,揭示了种间基因流反复发生的历史。雪鞋野兔的棕色冬季皮毛很可能源自渗入的黑尾长耳野兔等位基因,该基因在温和的冬季环境中已达到高频率。这些发现表明,作为关键生态特征基础的遗传变异的基因渗入可以播种过去和持续适应快速变化的环境。Agouti 的遗传变异通过多种野兔和长耳兔物种的冬季毛色聚集在一起,揭示了种间基因流反复发生的历史。雪鞋野兔的棕色冬季皮毛很可能源自渗入的黑尾长耳野兔等位基因,该基因在温和的冬季环境中已达到高频率。这些发现表明,作为关键生态特征基础的遗传变异的基因渗入可以播种过去和持续适应快速变化的环境。Agouti 的遗传变异通过多种野兔和长耳兔物种的冬季毛色聚集在一起,揭示了种间基因流反复发生的历史。雪鞋野兔的棕色冬季皮毛很可能源自渗入的黑尾长耳野兔等位基因,该基因在温和的冬季环境中已达到高频率。这些发现表明,作为关键生态特征基础的遗传变异的基因渗入可以播种过去和持续适应快速变化的环境。
更新日期:2018-06-21
down
wechat
bug